Breast development in pregnancy

A friend of mine is 17weeks pregnant but haven’t experience any changes in her breast…hope this is normal and if not what can be done
Thanks in advance

My name is Teeny, I’m new here. I’m having similar issue. I am 8 weeks pregnant but the symptoms keeps coming on and off. Especially my breast. I did an ultrasound and was told the baby is OK But I’m scared. I don’t want to experience any miscarriage after trying for almost 2 years to conceive. Please should I do

Nothing to worry u about dear
The Lord who has begin His good work of creation in you,will surely complete it